docs(readme): polish

[alexcg1]

Basic polishing

[codecov]

Codecov Report

Merging #16 (cbeb3f6) into main (3573d82) will decrease coverage by 0.13%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #16      +/-   ##
==========================================
- Coverage   82.94%   82.80%   -0.14%     
==========================================
  Files          67       67              
  Lines        3137     3193      +56     
==========================================
+ Hits         2602     2644      +42     
- Misses        535      549      +14     

Flag	Coverage Δ
docarray	82.80% <100.00%> (-0.14%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
docarray/array/mixins/plot.py	60.79% <ø> (-8.49%)	⬇️
docarray/__init__.py	100.00% <100.00%> (ø)
docarray/array/document.py	86.86% <100.00%> (+3.06%)	⬆️
docarray/array/mixins/getattr.py	81.81% <100.00%> (-9.10%)	⬇️
docarray/array/mixins/io/binary.py	95.55% <100.00%> (+0.31%)	⬆️
docarray/array/mixins/match.py	92.94% <100.00%> (ø)
docarray/document/mixins/attribute.py	100.00% <100.00%> (ø)
docarray/document/mixins/mesh.py	93.33% <100.00%> (+16.86%)	⬆️
docarray/document/mixins/porting.py	92.59% <100.00%> (+0.92%)	⬆️
docarray/proto/io/ndarray.py	94.78% <100.00%> (+0.09%)	⬆️
... and 6 more

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[hanxiao]

misuse of DocArray